13520000845 has 48 divisors (see below), whose sum is σ = 17834374800. Its totient is φ = 9833840640.

The previous prime is 13520000833. The next prime is 13520000861. The reversal of 13520000845 is 54800002531.

It can be written as a sum of positive squares in 24 ways, for example, as 4971519081 + 8548481764 = 70509^2 + 92458^2 .

It is a de Polignac number, because none of the positive numbers 2^k-13520000845 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21091725 + ... + 21092365.

It is an arithmetic number, because the mean of its divisors is an integer number (371549475).

Almost surely, 2^13520000845 is an apocalyptic number.

It is an amenable number.

13520000845 is a deficient number, since it is larger than the sum of its proper divisors (4314373955).

13520000845 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (13520000844) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (997).

13520000845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

The spelling of 13520000845 in words is "thirteen billion, five hundred twenty million, eight hundred forty-five", and thus it is an aban number.